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Delamination buckling of laminated plates
Author(s) -
Mukherjee Yu Xie,
Xie Zhicheng,
Ingraffea Anthony R.
Publication year - 1991
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620320610
Subject(s) - buckling , delamination (geology) , orthotropic material , finite element method , eigenvalues and eigenvectors , structural engineering , critical load , materials science , finite strip method , plate theory , position (finance) , mathematics , composite material , engineering , geology , physics , paleontology , quantum mechanics , subduction , tectonics , finance , economics
The subject of this paper is the buckling of laminated plates, with a pre‐existing delamination, subjected to in‐plane loading. Each laminate is modelled as an orthotropic Mindlin plate. The analysis is carried out by a combination of the finite element and asymptotic expansion methods. By applying the finite element method, plates with general delamination regions can be studied. The asymptotic expansion method reduces the number of unknown variables of the eigenvalue equation to that of the equation for a single Kirchhoff plate. Numerical results for the critical buckling load are presented for several examples. The effects of the shape, size and position of the delamination on the buckling load are studied through these examples.